16147221667 has 2 divisors, whose sum is σ = 16147221668. Its totient is φ = 16147221666.

The previous prime is 16147221659. The next prime is 16147221677. The reversal of 16147221667 is 76612274161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16147221667 - 2³ = 16147221659 is a prime.

It is not a weakly prime, because it can be changed into another prime (16147221617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8073610833 + 8073610834.

It is an arithmetic number, because the mean of its divisors is an integer number (8073610834).

Almost surely, 2^16147221667 is an apocalyptic number.

16147221667 is a deficient number, since it is larger than the sum of its proper divisors (1).

16147221667 is an equidigital number, since it uses as much as digits as its factorization.

16147221667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The spelling of 16147221667 in words is "sixteen billion, one hundred forty-seven million, two hundred twenty-one thousand, six hundred sixty-seven".